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I wonder if anyone out there has tried to reverse engineer/develop/hack the communication protocols (especially the wireless ones) on their diabetes devices? pumps, CGMs, etc. I love the idea of tinkering with a receiver that could generate twitter feeds, light up a light on my bedstand, etc. etc. - of course it opens the door to people trying to make their own closed-loop systems, which would be wicked cool, if probably deadly. ;)

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You can try... but be prepared to fail... It's easier to "hack" meter2PC protocol, because it's simple, and even with that you have some unidentified variables, but with device as complex as Pump or CGMS, different types of data, you can have quite a problems...
And I am almost sure that wireless communication has at least some protection here...

Plus firms couldn't use data you gained, which would mean you would have to rewrite pump software from scrach (since you don't have original firmware code).

Andy

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Something to do in my copious free time ;) I'm most interested in seeing if I can figure out how my sensor and CGM communicate... probably won't, but it's fun to ponder. Wonder what sort of encryption might be in the sensor data stream...? I'm no tinfoil-hat-wearer, but it'd be nice to know that the status of my blood is semi-private... :)

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I'd be interested in knowing as well. If I have some spare time at work I should dig out the spectrum analyzer and see if I can pick anything up.

I also have thought about having a go with the firmware on my animas 1250. the interface design is next to awful compared to modern cellphones. maybe when its time for a new pump.

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I want to hack my device. But not for fun. I just think that the user interface sucks. I just posted this before I read your post:

"...my Minimed Paradigm, shows me when i'm trending up or down, but there is no alarm or vibrate to call it to my attention. So, an hour passes - my BG increases by say 100 points - and bang, I'm over 200. What's the point of the thing if it doesn't warn me about trends? Seems like a minor hack to add a rising or falling trend alarm."

What do you guys think? Is it doable?

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These are federally regulated devices and I am pretty sure mucking with the how they work void any expectation of warranty or legal responsibility on the part of the manufacturer.

http://www.networkworld.com/cgi-bin/mailto/x.cgi?pagetosend=/export...

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